Accelerator



P. J. WLLM@ ACCELERATOR Aug. 31 1926. Ey

Filed Sept. 25. 1922 2 sheets-sheet 1 P. J. WHLLlAMS ACCELEBATOR Filed Sept- 25, 1922 2 sheets-Sheet 2 5 vide tor an effective control Patented Ang. 31, i926.

"Unirse srares asesina earner" rnRCY a. WILLIAMS, or san rnancrsoc, caLiroRnm, Vassis-filma fro .WILLIAMs BRos.

AIRCRAFT CCRroRA'rron, e. ccnrona'rren or caLIroRNra.

ACCELERA'I'OR.

Application filed September 25, 1922.

The present invention relates to improve-V ments in internal combustion engine accelerators of the type which cooperates with hand operated mechanismlor operating the y 5 throttle valve of the carburetor and is constructed and arranged to permit of independent operation of theioot and hand controlled operating means whereby the operar tion of the toot mechanism will not etlect 'the hand operated means and vice versa.

@ne of the objects of the invention-is to provide a simply constructed and highly etlicient accelerator mechanism which may be readily and easily incorporated with standard throttle controlling mechanism and certain makesof motor cars without necessitating materially the changing of the construction and arrangement of the standard mechanism or requiring the employment ot skilled labor.

Another object of the invention is to videan accelerator which consists of a mum number of compactly which operate in a reliable pro- arranged parts manner to proofthe carburetor throttle valve. i

The invention further resides in` the particular combination. inter-relation and relative arrangement ot specially arranged and novelly constructed elements ot the mechanismE which arrangement of elements provides for a general improvement in accelerators by way of insuring smoothness and ease of operation thereof, compactness, simplicity, and decreased cost ot' production.

The invention possesses other advantages and features some of which, with the foregoing' will be set forth at length in the following description where I shall outline inv full that form of the invention which I have selected for illustration companying and forming a part of the present specification. In said drawings I have shown one form of the construction of my 'avent-ion, but do not limit myself to such form since the invention as expressed in the claims may be embodied in a plurality of forms.

Referring to the drawings* Fig. l represents a perspectiveview of the device of my invention showing it as it would appear when in use and as attached to the hand control means and carburetor.

Fig.

view of the device of my invention.

miniin the drawings acit is to be understood that l" 2 represents a` fragmentary top planV Serialv No. 590,233.

Fig'. 3 represents a side elevation of the pedal shown partly insection and as connected with the flexible operating means.

Fig. -lis a perspective view of a modiiied form of the invention showing the hand operated mechanism and carburetor as associated therewith.

Fig. 5 is a top plan view'ot a part of the mechanism. Y I

6 is fragmentary perspective-view oft amodied lorm of the invention.

ln the drawings wherein thereis illustrated indetail one embodiment ofthe invention, the numeral l designates a foot-board of Van automobile, 2 the steering mechanism and 3 the standard hand operated mechanism, the latter including` a crank arm 4l which is adapted for connectionwith the crank arm 5 of the carburetor 6 through the accelerator et my invention, as will be later more fully described. Y i l l The accelerator of my invention comprises essentially a rod 7, one end of which is pivcted as at 8 to the carburetor crank arm 5, the other end the crank arm 4 through the instrumentality of specially constructed means 9forming a part of the invention. The means 9 and arms 7 comprise a resilient or longitudinally extensible connection between the two crank arms. The means 9 includes an angular bracket consisting` of a top plate 9', depending end langesfl() andv ll and` a lateral extension l2 carried by the top plate 9. The top plate 9 with upstanding ears 13 to which. the crank arm l is p-ivcted. The rod 7 slidably eX- tends through openings in the end pieces l() and l1 and is normally heldin its eX- ably awiret. 20, which element is slidable in a flexible cable or tube 2L The tube 2l is seated in a socket 22 on the pedal mounting 19 and it is made liastvto the 'bracketof the member 8 by an angular clamp 23 secured to the flange ll and top plate 9 by a screw 24:.

of which4 is connected with is provide-d adjacent one end vra bracket', bell crank and `moved so as to open the throttle valve Theclamp is provided with a lug adapted plate so as to be securely held in place. Thewire element 20 extendsbeyond the tube or cable 2 1 and at its tree end ista'stened as at 27 to one end of' a bell crank 28. The bell crank is pivoted intermediate of its endsas at-29 to the extension 12 and at its other end is connected with an enlarged portion on the rod 7, through the instrumentality of a pin and slot joint 3l. By having the ends of the cable 2l held stationary in the socket 22 and clamp 23, when thepedal 17` 'isdepresseth vthe wire20' is pulled and rocksthe bell crank 29, causing the rod 7 to be ot the carburetor. This action is againsti'the action of the spring l5 and independent of the bracket whereby the bracket and hand oper-v a'tedmeans 3 will not be effected upon such movement ot said rod 7. It will thus be seen that the foot operated means of the accelerator is actuated without causing any interference with or movement of the hand oper ated means ,3. By causing the wire 2O to pull directly on thebellfcrank 28 when the pedal is depressed, and due to the arrangement o'l' the and Vsmooth movement of the rod 7 will be effected-with a minimum amount of exertion expended to depress the pedal. Upon release ot the pedal, the springl will be operposition and close the throttle valve.

l/Vhen the hand operated means is actuated, the-crank arm 4 in being turned-causes the bracket 9 and rod arm. Since the wire 20 and cable or tube 2l are flexible, mechanism will not effect operation of the pedal. By this arrangement it will be seen that either the hand or may be operated without one affecting the other. By this arrangement including the connections of botli Y with the rod 7 and flexible elements oper- 50- is eliminated in the operation ot Lthe mech-k simple, small, compact and may foot board ating lthe bell crank, a great deal of friction anism and the accelerator is thereby prevented froin. sticking and otherwise proving uncertain in operation. The entire device is and easily attached to various makes of automobiles.

In the modified form t the invention illustrated inV Figs.j4 and'5, 33 designates a ofan automobile, 34 the steering mechanism, 35 the throttlevalve crank arm, 38 the han'dfoperated crank arm and 39 an auxiliary crank rod40 Vforming a part of the mechanism 35.

The resilient or longitudinally extensible connection between the crank arms 39 andl 37 comprise an angular bracket'4l including thereby' serves to normally hold said rod exf f, oo

bracket and bellcrank, yan easyy return the parts to normal',l

...55 andfa flexible, preferably wire, element 56, slidably mounted within the cable. The

7 to be moved bodilyk thereby operating the throttle valve crank rthis bodily movement of the.V`

toot operated means be readily.v

'arm' loosely mounted on a a Vlongitudinal bodywplate 42, anangular lateral projection 43y at one end thereof and a similar projection 44 at the opposite end, The body `plate 42 is pivotallyv connected as at 45 with the crank arm 38 and similarly connected as at 46 with the crank arm 39, said pivot points being spaced apart and located at points between the ends of the body plate. .L j.

A slide member 47 is movable longitudinally in a 42 and has connected therewith one end ot a rod 49, the other end ot which rod is pivotally connected as at 50 with the crankarm 37 on the carburetor. The slide member is provided with an angular extension 5l disposed on the side of the plate 42 opposite that on which the rod is disposed and to this angular` projection 5l one end' ot a rctractile spring 52-is connected. The other end of the springis secured in any suitable manner to the projection 44 at' the forward end of 'the body plate and said spring tended and the throttle valve closed.

vAsa means for operating the rody 49 without causing 'movement of the plate or bracket 4l and thehand operated mechanism 35, I employthe same means as provided in the previously described embodiment of the invention, which means includesy a: pedal mounting :53 on the floor board, a pedal 54 thereon, a flexible cable -tion 43' on the bracket 4l.

Then the pedal is depressed, a force is transmitted through the flexible wire element sucli as will cause the liexible cable 55 to -be moved longitudinally relative to the wire vrelement whereby the slide member attached to said cable will be moved in the `slot 48 in the direction ofthe angular projection 43. rfhis'will cause'the arm 49 to be'moved correspondingly and the throttle and hand operated mechanism 35. The spring 52 servesto return-the parts to normal position upon release of pressure upon the pedal. v

lVhen the handV operated mechanism crank arm 3S is turned, the bracket 4l, slide 47 and 'rod 49 are moved bodily yas one and c ause` the throttle valvecrank arm to be operated so as to4 openV the .throttle slot 48 formed in tlie'body plate j valve to be opened. Tliisaction takes place without lcausing movement ot the bracket 4l s valve. Due to the exible connections between the bracket and the pedal, this action will not cause the pedal to be actuated. lVhen the bracket Lll is moved bodily the auxiliary crank arm 39 turns `freely on the rod l0 and causes the bracket to be moved in a straight line instead of arcuately, thereby lessening friction, making the operation of the apparatus simple and reliable and avoiding moving parts. rlhe construction of this form of the invention is compact, simple and such that it may be readily and easily attached to a motor vehicle and operated in an easy and reliable manner to control the throttle-valve either through the hand or foot operated means without causing the action of one to interfere with the other.

As shown in F ig. 6 of the drawings, the modilied form of the accelerator comprises a member 59 in the form ot a lever, which is pivoted at one end as at 60 to the hand operated crank arm 61, and at its other end 4is pivotally connected as at 62 with one end of a movable member 63, the latter 1n theY form of a lever. A spring 64 is mounted on the pivot 62 and engages with stop members 65 in such manner as to tend to torce the members 59 and 63 apart. The other end of the member 63 is pivoted as at 66 to an intermediate portion of va rod 67, the portion 68 of which is. adapted for connection with the throttle valve crank arm, not shown. The rod 67 is slidably mounted on a guide member 69 carried on the lirst named member or lever 59.

A iiexible Awire element 70 of the same arrangement as employed in the other form of the invention, and connected with :toot operated mechanism, not shown, operates within a flexible cable 71, likewise connected with the toot operated mechanism. @ne end of the cable 7l is lixed to a member 72 carried on the movable member 63, which member72 may be pivotally mounted as shown. The wire 70 extends beyond the member 72 and is stationarily held in a fastening element 78 on said member 59, the member 73 being preferably pivoted, as shown. As regards to the action of the liexible elements 7l and 70, the same operation takes place as in the formy ot the invention shown in Figs. e and 5. When the pedal, not shown, is depressed, the wire 70 is acted upon in such manner that the cable 7l slides relative to the wire and moves the member 63 on its pivot 62 without moving the lever or member 59. This causes the rod 67 to be moved and the throttle valve, not shown, to be operated. lllhen the hand operated crank arm 6l is operated, the members 59 and 63, also the rod 67 are moved bodily and thereby prosticking or jamming of they nism of vide for controlling the carburetor without operating the foot operated mechanism. The entire arrangement as to the members 59, 63 and 67, comprises a longitudinal extensible or resilient connection between the hand operated and throttle valve crank arms.

I claim l. In combination with the throttle valve crank arm and the hand operated crank arm of the throttle valve controlling mechanism oi an internal combustion engine, a member pivoted to the hand operated crank arm, another member having connection with the throttle valve crank arm, amovable4 member on the first named member to which the second named member is connected, a pedal, a liexible element secured at one end to the pedal and at its other end to the first named member and a flexible cable through which said ilexible member is movable, which cable is fastened to said movable member and stationarily held at a point adjacent to said pedal anda spring tending to hold said second named member extended.

2. ln combination with the throttle valve crank arm and the hand operated crank arm of the throttle valve controlling mechanism of an internal combustion engine, a member pivoted to the hand operated crankj arm, another member having connection with the throttle valve crank arm, a movable member on the first named member to which the second named member is connected, a pedal, a tlexible element secured at one end to the pedal and at'its other end to the first named member and a flexible cable through which said flexible member is movable, which cable is fastened to said movable element and stationarily held at a point adjacent to said pedal`r a spring tending to hold said second named member extended, a stationary member and a link connection between said stationary member and the first named member.

3. The combination with the throttle valve crank arm and the hand operated crank arm of the throttle valve controlling' mechaan automobile, of a member pivoted to the hand operated crank armq another member pivoted to the throttle valve crank arm, a movable member on the first named member to which the second named member is cannected, a pedal, a flexible element secured at one end of the pedal, a flexible cable through which the flexible element is movable, said cable and flexible element being, one of them connected with the lirst named member, and the other of them connected with the movable member and a spring' tending to hold the second named member extended.

PERCY J. WILLIAMS. 

